SX32 Riser not working with TF330, why?

[heitzek]

Hi,

This is possibly going to be a dumb one, but hey, that's me :)

I got my hands on an SX-32 Mk2 (not the pro) which comes with the card itself and a backplane with all ports.

I know that on the TF330 board clearly states that is not compatible with the analog riser, but I would like to understand why so I can try to figure out if it's possible to do any mod either to the TF330 or the SX-32 riser itself.

Thanks!

[8 Bit Dreams]

it's because not all signals are present on the riser (board isn't fully routed)
You can add patchwires and try to let it work though

[terriblefire]

My bet is that PUNT is not floating on the SX32. I don’t know why but it’s been explained before why the analogic riser doesn’t work.

No mod will fix the PUNT float issue. It needs a firmware fix on the riser. TL;DR.. the risers set signals to 1 when they need to be set to high impedance.

[heitzek]

Thank you so much for the super quick answer.

I will give it a shot according your advice (both) and I'll get back to you with any news.

Cheers.